The paper describes the investigations undertaken at Spaccasasso, a hill placed in the Regional Park of Maremma (Alberese, GR). Excavations at the site uncovered a Copper Age cemetery on the plan facing the Spaccasasso shelter, and a Neolithic cinnabar mine. Layers attesting the extraction of cinnabar have been excavated under the funerary layers. Survey investigations on the NW slope of the hill have individuated other mining areas that can date also to later phases
